Granted Patent
Utility
US 4,539,356 · App. 06/661,743
Polyethylene terephthalate molding composition
Inventor:
Suzanne B. Nelsen
Patented Case
View Patent ↗
Granted: Sep 3, 1985
Filed: Oct 17, 1984
Inventor
Suzanne B. Nelsen
Assignee (at issue)
GAF Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.